Lock, coupling, and the like



March 25,, 1941.

E. L. SHAW LOCK, COUPLING, AND THE LIKE Filed June 14, 1938 if W0 1/Patented Mar. 25, 1941 UNITED STATES LOCK, COUPLING, AND THE LIKE EdwardL. Shaw, Brookline, Mass, assignor to Shawlock, 1110., Boston, Mass., acorporation of Massachusetts Application June 14, 1938, Serial No.213,602

3 Claims.

This invention relates to locks, couplings and the like wherein it isdesired to secure two members together. The invention more particularlyconcerns a rotary element adapted to be carried by one of such membersand having a portion projecting outwardly thereof in position to passinto an opening provided in the other member, this outwardly projectingportion being so constructed relative to the opening that-rotation ofthe element after it passes into the opening securely locks the memberstogether.

In its preferred form, my invention ..employs a rotary element of ashape and size to pass laterally into the opening provided in the saidother member when the element is in one rotary position and to be soengaged with the walls of the opening as securely to bind the memberstogether and prevent relative movement of the members inany directionwhen the element is rotated to another position within the opening.

More specifically the invention embodies a construction wherein the saidopening and the outwardly projecting portion of said element areprovided with cooperating walls converging away 5 from the free end ofsaid portion and wherein rotation of the element not only looks theelement from lateral movement outwardly of the opening but whichrotation also draws said walls into tight engagement with each other.The primary object of the invention resides in the provision of a newand improved lock or coupling of this nature.

These and other features of the invention will bebest understood andappreciated from the fol- 5 lowing description of certain embodimentsthereof selected for purposes of illustration and shown in theaccompanying drawing wherein:

Fig. 1 is a plan sectional view through two members employing myimproved lock and. show ing the lock in plan elevation cooperatingtherewith,

Fig. 2 is a front elevation thereof,

Fig, 3 is a plan sectional view taken on line 3-3 of Fig. 2,

Figs. 4 and 5 are sectional views taken on line 44 of Fig. 3 and showingthe locked and unlocked positions respectively,

Fig, 6 is a perspective view of a portion of the lock,

Fig. 7 is a perspective View of the locking bolt,

Fig. 8 is a front elevation of my improved lock applied to a window,

Fig. 9 is a View thereof taken on line 9-5 of Fig. 8,

Fig. 10 is a fragmentary front elevation of a window employing anotherform of my invention,

Fig. 11 is a view taken on line H-ll of Fig. 10,

Fig. 12 is a sectional view on line I 2-l2 of Fig. 13 through two platesin face to face contact and employing one form of my improved lock to 5secure the same together,

Fig. 13 is an edge elevation thereof.

Referring first to Figs. 1-7 of the drawing, l0 and I2 indicate twomembers to be secured together by my improved lock. The lock comprises10 two pieces 14 and I6 having marginal holes l8 for receiving screws 20to secure the two pieces within suitable recesses formed within themembers. The piece 14 is provided with an opening 22therein in which thewalls 24 converge conically toward the open cylindrical end of the hole.This piece is also cut away at 26 to provide the hole with a lateralmouth narrower thereacross than the diameter of the hole.

The piece I6 is bored to receive the locking bolt 20 28 thereinto with aportion projecting outwardly therefrom, this portion comprising acylindrical section 30, two oppositely disposed conical faces 3| and twooppositely disposed flats 32. The cylindrical section and flats are of adiameter 25 to pass through the mouth 26 and the conical faces areconstructed to fit the conical walls 24.

A handle 34 is secured to the other end of the bolt and the bolt ispermitted a limited longitudinal movement under the action of a pin 3630 hearing against a cam plate 38.

The locking bolt is so mounted in the piece I6 and member l2 that theoutwardly projecting portion 30-32 of the bolt can pass laterally intothe opening 2224 through the mouth 26 when the bolt is turned to theposition indicated in Fig.

5. Rotation of the bolt to the position shown in Fig. i precludespassage of the bolt outwardly through the mouth and thus secures themember l2 against opening movement. Furthermore, the o engagement of theconical walls 3! of the bolt with the walls 24 prevent separatingmovement of the members longitudinally of the bolt. It will also benoted that the surface of the plate 38 against which the pin 36 engagesis so inclined that rotation of the bolt from the position of Fig.

5 to the position of Fig. 4 draws the bolt longitudinally to the right.Such movement of the bolt brings the walls 3| tightly into engagementwith the walls 24 whereby securing the two mem- 5o bers l0 and I2against relative movement in any direction.

In Figs.- 8 and 9 I have shown my improved lock applied to the upper andlower sashes 40 and 42 of a window. The two parts of the lock are 55herein indicated by reference characters 44 and 46 and the constructionis substantially the same as above described. When the bolt is rotatedby the handle 48 to the position indicated in Fig. the locking end ofthe bolt can pass freely into the opening in the part 44 and turning ofthe bolt to the position of Fig. 4 securely binds the two sashestogether against movement or rattling.

In Figs. and 11 I have indicated a further application of the lock to awindow. In this case a plate 50 is secured in one guideway of the windowsash 52. The plate is slotted longitudinally at 53 and conical openings54 are provided at spaced locations along the slot. The locking bolt 56is mounted in the sash with the conical locking end thereof projectinginto the slot. The window is free to move up and down when the bolt isturned to the position indicated in Fig. 5 and may be locked againstmovement or rattling in any one of the positions 54 by turning the boltto the position indicated in Fig. 11.

In Figs. 12 and 13 I have illustrated how my invention can be employedto secure a plate or the like to a foundation or to another plate. Theplate 60 to be secured is drilled at 62 to receive a bolt 84 having ahead provided 'with two oppositely disposed flats 66 and two oppositelydisposed conical faces 68 of the nature illustrated in Fig. '7. Thefoundation plate 10 is provided with an opening '12 therein and anentrance mouth 74 of a Width just permitting the flats B5 to passtherethrough. In use the bolt is passed through the hole 62 and throughthe mouth 14 into the opening 12. The bolt is then turned 90,

' by engagement of a Wrench with the squared outer end 16, to theposition indicated in Figs. 12 and 13 wherein the conical faces 68 ofthe bolt engages the conical wall of the opening 12. A nut 18 threadedto the bolt is then tightened against the plate 6!! to draw the faces 68and 12 into tight contact whereby holding the plate 6!) tightly to theplate 10. It will be understood that as many bolts 64 may be employed asare necessary.

It will be understood that I have herein shown only certain specificembodiments of my invention and that the same is adaptable to a wideapplication of forms and uses.

Having thus described my invention, What I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a coupling, a member having a chamber therein with concave conicalside walls, a-second member having a longitudinally extending por-' tionprovided with :convex conical side walls substantially corresponding tosaid concave side walls and having two oppositely disposed flats or thelike therealong rendering the diameter of said portion less in thedirection of said flats, the first named member having an opening intothe chamber permitting the insertion of said portion of the secondmember thereinto when the flats of the second member are in apredetermined position relative to said opening, and cam means forgiving the members a relative longitudinal movement drawing said convexand concave walls into tight engagement upon relative rotary movement ofthe cam means and one of the members when said portion of the secondmember is within the chamber.

2. A lock for securing together two relatively movable members one ofwhich has a chamber therein open at one end in the direction of theother member and having a relatively lateral mouth open thereinto andnarrower thereacross than within the chamber, the walls of the chamberconverging toward said open end, a rotary element carried by the othermember and having a portion projecting outwardly thereof in position topass through said mouth and into the chamber, said portion having onediameter permitting such portion to pass through the mouth into thechamber and having another larger diameter permitting rotation of theportion within the chamber but preventing passage thereof 0 through themouth, said portion also converging toward said other member and beingof a size preventing passage through said one end of the chamber, andmeans for rotating the element.

3. A look for securing together two relatively movable members one ofwhich has a chamber therein open in the direction of the other memberand also having a relatively lateral opening thereinto, a rotary elementcarried by the other member and having a portion projecting outwardlythereof in position and of a shape and size to pass through the lateralopening into the chamber when in one rotary position and to preventreturn movement of the element therethrough when rotated to anotherposition within the chamber, the chamber and the outwardly projectingportion of the element being provided with cooperating conical wallsconverging toward the other member, means for rotating the element, andcam means for moving'the element longitudinally in a direction to drawsaid walls into tight engagement upon rotation of the element to saidanother position.

EDWARD L. SHAW.

